By mistake commit 500fcc08a32b ("serial: samsung: Add missing checks for dma_map_single failure") removes a local variable which is still used by code. After backporting the commit to stable, compilation fails: drivers/tty/serial/samsung.c: In function ‘s3c24xx_serial_request_dma’: drivers/tty/serial/samsung.c:909:45: error: ‘flags’ undeclared (first use in this function) Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> --- Fix for stable-rc commit: bc3ac2299c4873cdc7f9bf3c867c23e9714a036f --- drivers/tty/serial/samsung.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index ca0bcd7fd61f..43c84c9bb904 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -859,6 +859,7 @@ static void s3c24xx_serial_break_ctl(struct uart_port *port, int break_state) static int s3c24xx_serial_request_dma(struct s3c24xx_uart_port *p) { struct s3c24xx_uart_dma *dma = p->dma; + unsigned long flags; int ret; /* Default slave configuration parameters */ -- 2.7.4